1. Open Street Map (June 2001),
http://www.openstreetmap.org/
2. Allianz Sponsoring Media Center (June 2005),
http://sponsoring.allianz.com/en/
3. Wymann, B.: TORCS Robot Tutorial (February 24, 2005),
http://www.berniw.org/
4. F1 Tracks for TORCS (June 2011),
http://apr-free.info/joomla/
5. Google Map (June 2011),
http://maps.google.com.tw/